The Wrestler star is currently dating 24-year-old model Elena Kuletskaya, who is teaching him to speak Russian for his upcoming role as a Soviet villain in "Iron Man 2."

He sparked speculation the couple's relationship had stepped up by treating Kuletskaya's mom to a special day out in Los Angeles earlier this year, and now they are preparing to walk down the aisle in April, according to Page Six.

A source tells the publication, "They haven't booked a venue or made any solid plans. He just knows he wants to do it in April, and he's been asking what is involved in a traditional Russian wedding ceremony."